Picture frame



FIG. 1 is a perspective view of the picture frame showing the new design.

FIG. 2 is a front view thereof.

FIG. 3 is a side view thereof, the opposite side being symmetrical.

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a side view of the picture frame, showing an alternative embodiment of the new design, all other views of the embodiment being equivalent to those of the prior embodiment. 

The ornamental design for a picture frame, as shown and described. 